--- title: "Deepgram vs OpenAI speech-to-text API: Which is searched more?" description: "Is Deepgram or OpenAI speech-to-text API more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Speech to text APIs set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time." canonical: "https://gobrandwave.com/demand/global-en/compare/deepgram-vs-openai-speech-to-text-api" publisher: "Brandwave" --- # Deepgram vs OpenAI speech-to-text API: Which is searched more? Is Deepgram or OpenAI speech-to-text API more popular in search? Compare estimated monthly branded-search demand and Share of Search inside the Speech to text APIs set worldwide. Branded searches tell you how often people look for a brand by name or related terms. Comparing these searches across competitors helps you see how popular each brand is over time. ## Key facts - **Compared**: Deepgram and OpenAI speech-to-text API - **Competitive set**: Speech to text APIs - **Market**: Global - **Month measured**: Sep 2026 - **Deepgram Share of Search**: 62.5% - **OpenAI speech-to-text API Share of Search**: 0.12% ## Is Deepgram or OpenAI speech-to-text API more popular in search? - In September 2026, Deepgram had more branded searches than OpenAI speech-to-text API among speech to text APIs worldwide. Deepgram had about 74,000 branded searches, while OpenAI speech-to-text API had 140. Deepgram made up 62.5% of all speech to text API searches we track, and OpenAI speech-to-text API accounted for 0.12%. - Deepgram was ahead of OpenAI speech-to-text API in every measured month of the 12 months ending September 2026. - Across the 12 months ending September 2026, Deepgram’s share of searches among speech to text APIs worldwide moved from 49.5% to 62.5%, and its estimated monthly branded searches moved from 60.5K to 74K. - Across the 12 months ending September 2026, OpenAI speech-to-text API’s share of searches among speech to text APIs worldwide moved from 0.17% to 0.12%, and its estimated monthly branded searches moved from 210 to 140. ## Top speech to text APIs in ChatGPT and Google AI Overviews In three ChatGPT questions and two Google AI Overviews, Deepgram and OpenAI speech-to-text API were each mentioned in three out of five: in all three ChatGPT answers, but not in either of the two Google AI Overviews. OpenAI speech-to-text API was listed before Deepgram in two out of three answers that named either. Brands get a higher AI rank if they are mentioned earlier in the answers that list options. | Brand | AI rank | ChatGPT answers that named it | Google AI Overviews that named it | All answers that named it | | --- | --- | --- | --- | --- | | OpenAI speech-to-text API | 1st | 3 of 3 | 0 of 2 | 3 of 5 | | Deepgram | 2nd | 3 of 3 | 0 of 2 | 3 of 5 | | AssemblyAI | 3rd | 3 of 3 | 1 of 2 | 4 of 5 | | Google Cloud Speech-to-Text | 4th | 3 of 3 | 1 of 2 | 4 of 5 | | Amazon Transcribe | 5th | 1 of 3 | 0 of 2 | 1 of 5 | | Speechmatics | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | | Rev AI | Not ranked | 0 of 3 | 0 of 2 | 0 of 5 | ## Every AI answer about speech to text APIs - Asked ChatGPT "Which speech to text API should I use?": 1. OpenAI speech-to-text API, 2. Deepgram, 3. AssemblyAI, 4. Google Cloud Speech-to-Text - Asked ChatGPT "What are the best speech to text APIs?": 1. Deepgram, 2. OpenAI speech-to-text API, 3. AssemblyAI, 4. Google Cloud Speech-to-Text - Asked ChatGPT "What's the best speech to text API for an app workflow?": 1. OpenAI speech-to-text API, 2. Deepgram, 3. AssemblyAI, 4. Google Cloud Speech-to-Text, 5. Amazon Transcribe - Searched Google, AI Overview "speech to text api": 1. Google Cloud Speech-to-Text, 2. AssemblyAI - Searched Google, AI Overview "speech recognition api": named none of the brands we track Not named in any answer: Speechmatics and Rev AI. Brands are listed in the order each answer named them. The answers were collected in the United States on October 21, 2026. ## How did search popularity change for speech to text APIs worldwide in September 2026? - In September 2026, Deepgram gained share of searches among speech to text APIs worldwide, from 60.3% to 62.5%. - Estimated monthly branded searches for OpenAI speech-to-text API worldwide fell 33.3% over 12 measured months, from 210 to 140 in September 2026. ## Month by month | Month | Deepgram estimated searches | Deepgram Share of Search | Deepgram rank | OpenAI speech-to-text API estimated searches | OpenAI speech-to-text API Share of Search | OpenAI speech-to-text API rank | | --- | --- | --- | --- | --- | --- | --- | | Oct 2025 | 60.5K | 49.5% | 1 | 210 | 0.17% | 7 | | Nov 2025 | 49.5K | 46.6% | 1 | 140 | 0.13% | 7 | | Dec 2025 | 60.5K | 56.7% | 1 | 140 | 0.13% | 7 | | Jan 2026 | 60.5K | 54.3% | 1 | 140 | 0.13% | 7 | | Feb 2026 | 60.5K | 53.5% | 1 | 170 | 0.15% | 7 | | Mar 2026 | 74K | 56.2% | 1 | 170 | 0.13% | 7 | | Apr 2026 | 74K | 55.3% | 1 | 170 | 0.13% | 7 | | May 2026 | 74K | 58.1% | 1 | 390 | 0.31% | 7 | | Jun 2026 | 74K | 60.7% | 1 | 880 | 0.72% | 7 | | Jul 2026 | 74K | 59.7% | 1 | 1.6K | 1.3% | 7 | | Aug 2026 | 74K | 60.3% | 1 | 210 | 0.17% | 7 | | Sep 2026 | 74K | 62.5% | 1 | 140 | 0.12% | 7 | ## How each brand is measured Brandwave collects information about searches that people make online using Deepgram’s and OpenAI speech-to-text API’s names. When viewed over time, estimated search volumes for these branded terms can be used to understand whether interest in the brands is growing, holding steady, or fading. - **Deepgram**: Measured on the search term “deepgram”. - **OpenAI speech-to-text API**: Measured on the search term “openai speech to text api”. - [Deepgram profile](/demand/global-en/brands/deepgram) - [OpenAI speech-to-text API profile](/demand/global-en/brands/openai-speech-to-text-api) - [All speech to text APIs worldwide](/demand/global-en/categories/speech-to-text-apis): The set both shares are measured inside, 7 brands. ## Methodology - [How is the Brand Demand Index measured?](/demand/methodology): Where the figures come from, what they compare, and how they may be reused. ## Frequently asked questions ### Is Deepgram or OpenAI speech-to-text API more popular in search? In September 2026, Deepgram had more branded searches than OpenAI speech-to-text API among speech to text APIs worldwide. Deepgram had about 74,000 branded searches, while OpenAI speech-to-text API had 140. Deepgram made up 62.5% of all speech to text API searches we track, and OpenAI speech-to-text API accounted for 0.12%. ## Cite this page Brandwave. "Deepgram vs OpenAI speech-to-text API: Which is searched more?". https://gobrandwave.com/demand/global-en/compare/deepgram-vs-openai-speech-to-text-api This page is also available as HTML at https://gobrandwave.com/demand/global-en/compare/deepgram-vs-openai-speech-to-text-api. Brandwave publishes an index of its Markdown pages at https://gobrandwave.com/llms.txt.